linux-kernel - [PATCH 01/24] ubifs: Export ubifs_check_dir

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Date:   Thu,  1 Dec 2016 22:20:48 +0100
From:   Richard Weinberger <richard@....at>
To:     linux-mtd@...ts.infradead.org
Cc:     david@...ma-star.at, tytso@....edu, dedekind1@...il.com,
        ebiggers@...gle.com, mhalcrow@...gle.com, adrian.hunter@...el.com,
        linux-kernel@...r.kernel.org, hch@...radead.org,
        linux-fsdevel@...r.kernel.org, jaegeuk@...nel.org,
        dengler@...utronix.de, sbabic@...x.de, wd@...x.de,
        Richard Weinberger <richard@....at>
Subject: [PATCH 01/24] ubifs: Export ubifs_check_dir_empty()

fscrypto will need this function too. Also get struct ubifs_info
from the provided inode. Not all callers will have a reference to
struct ubifs_info.

Signed-off-by: Richard Weinberger <richard@....at>
---
 fs/ubifs/dir.c   | 8 ++++----
 fs/ubifs/ubifs.h | 1 +
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index ca16c5d7bab1..14a226d47f4c 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -712,15 +712,15 @@ static int ubifs_unlink(struct inode *dir, struct dentry *dentry)
 
 /**
  * check_dir_empty - check if a directory is empty or not.
- * @c: UBIFS file-system description object
  * @dir: VFS inode object of the directory to check
  *
  * This function checks if directory @dir is empty. Returns zero if the
  * directory is empty, %-ENOTEMPTY if it is not, and other negative error codes
  * in case of of errors.
  */
-static int check_dir_empty(struct ubifs_info *c, struct inode *dir)
+int ubifs_check_dir_empty(struct inode *dir)
 {
+	struct ubifs_info *c = dir->i_sb->s_fs_info;
 	struct qstr nm = { .name = NULL };
 	struct ubifs_dent_node *dent;
 	union ubifs_key key;
@@ -758,7 +758,7 @@ static int ubifs_rmdir(struct inode *dir, struct dentry *dentry)
 		inode->i_ino, dir->i_ino);
 	ubifs_assert(inode_is_locked(dir));
 	ubifs_assert(inode_is_locked(inode));
-	err = check_dir_empty(c, d_inode(dentry));
+	err = ubifs_check_dir_empty(d_inode(dentry));
 	if (err)
 		return err;
 
@@ -1108,7 +1108,7 @@ static int do_rename(struct inode *old_dir, struct dentry *old_dentry,
 		ubifs_assert(inode_is_locked(new_inode));
 
 	if (unlink && is_dir) {
-		err = check_dir_empty(c, new_inode);
+		err = ubifs_check_dir_empty(new_inode);
 		if (err)
 			return err;
 	}
diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h
index 096035eb29d0..6d75cb7578fc 100644
--- a/fs/ubifs/ubifs.h
+++ b/fs/ubifs/ubifs.h
@@ -1737,6 +1737,7 @@ struct inode *ubifs_new_inode(struct ubifs_info *c, const struct inode *dir,
 			      umode_t mode);
 int ubifs_getattr(struct vfsmount *mnt, struct dentry *dentry,
 		  struct kstat *stat);
+int ubifs_check_dir_empty(struct inode *dir);
 
 /* xattr.c */
 extern const struct xattr_handler *ubifs_xattr_handlers[];
-- 
2.7.3